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- The following experimental data were obtained for the reaction of \'I14* and NOf in acidic solution. NH/(aq) + NO2-(aq) — N;(g) + 2 H,O(f) INH/I (mol L1) [NO21 (mol L-1, Rate = A[NJ/At (mol L-1 s’) 0.0092 0.098 3.33 X IO"7 0.0092 0.049 1.66 X 10‘7 0.0488 0.196 3.51 X 10"6 0.0249 0.196 1.80 X 10-6 Determine the rate law for this reaction and calculate the rate constant.The gas-phase decomposition of di-tert-butyl peroxide. (CH₂) COOC(CH3)3, is first order in the temperature range 110°C to 280°C with a first- order rate coefficient k=3.2 x 10¹ exp[-(164 kJ mol/RT³ Part A What is the value of AH for this reaction in the temperature range between 110 Cand 280 C Express your answer with the appropriate units. ΔΗ" - 164 НА kJ mol Submit Previous Answers Request Answer Xncorrect; Try Again; 4 attempts remaining ?(b) The reaction between H2O2 and lodide; H,0, + 21 + 2H*→ 2H,0 + 12 Proceeds by two parallel mechanism and led to a rate laws, k, [H,0][I] and = k, [H,0][][#*] %3D dt dt The change in observed rate constants with ionic strength for both the mechanisms is given in the following table. k (M's) 0.69 k2 (M's') Sr. no. Ionic strength (1) 19.0 0.00 0.0207 0.66 15.0 3 0.0525 0.67 12.0 4 0.0925 0.68 11.3 0.69 0.1575 0.2025 9.7 0.71 9.2 With the help of this data and corresponding plots, comment on which mechanism between these two would follow Primary salt effect more prominently. rhich tyne of complex mechanism T-jump
- The Arrhenius equation shows the relationship between the rate constant k and the temperature T in kelvins and is typically written as k = Ae-E/RT where R is the gas constant (8.314 J/mol K), A is a constant called the frequency factor, and Da is the activation energy for the reaction. However, a more practical form of this equation IS In = (1-12) Ea R which is mathmatically equivalent to In Ea F (1/2 R T₂ k2 T1 where ki and k2 are the rate constants for a single reaction at two different absolute temperatures (T₁ and T₂). ▼ Part A The activation energy of a certain reaction is 42.1 kJ/mol. At 20 °C, the rate constant is 0.0150s¹. At what temperature in degrees Celsius would this reaction go twice as fast? Express your answer with the appropriate units. T₂ = Submit Part B Value k₂ = Request Answer Submit Given that the initial rate constant is 0.0150s¹ at an initial temperature of 20 °C, what would the rate constant be at a temperature of 200. °C for the same reaction described in Part…2. Consider the kinetic data of the reaction of P + 2 Q + 2+ - PQ, + Z*and answer the succeeding questions: Experiment P (M) Q (M) Temp ("C) Initial Rate, M/s 1 0.01150 0.01200 0.00000 25 4.80 x 10-4 2 0.02300 0.01200 0.00000 25 1.92 x 10-3 3 0.01150 0.02400 0.00000 25 9.60 x 10-4 4 0.04600 0.01200 0.00000 25 7.68 x 10-3 5 0.01150 0.04800 0.00000 25 1.92 x 10-3 6 0.01150 0.01200 0.00000 10 5.10 x 10-5 0.01150 0.01200 0.00000 40 4.55 x 10-3 0.01150 0.01200 0.00500 10 4.98 x 10-5 0.01150 0.01200 0.01050 25 4.82 x 104 10 0.01150 0.01200 0.02100 40 4.44 x 10-3 A. Determine the rate order with respect to P. Determine the rate order with respect to Q. C. Determine the rate law of the reaction. What is the average rate constant? Indicate the appropriate units. E. What is the energy of activation and frequency factor of the reaction without the additive ion? Include the equation of the best fit line of the Arrhenius equation and RSQ Note: Use the calculated rate constant in set up 1 for 25°C…The following mechanism for the gas phase decomposition of oxygen difluoride is consistent with the observed rate law. step 1 fast: 2 OF2=0;F4 step 2 slow: 0,F4¬0; +2 F; (1) What is the cquation for the overall reaction? Use the smallest integer coefficients possible. If a box is not needed, leave it blank. (2) Enter the formula of any species that acts as a reaction intermediate? If none leave box blank: (3) Complete the rate law for the overall reaction that is consistent with this mechanism. Use the form k[A]"|B]". , where 'I' is understood (so don't write it if it's a 'l') for m, n etc.
- First order: [A]o In———- = kt [A]t t1/2= .693/kFor the hypothetical reaction A + 3B → 2C, the rate of appearance of C given by (A[C]/At) may also be expressed as Ο ΔΙC/Δt - ΔΙΑ/Δt Ο ΔΙC/Δt -(3/2) ΔΙΒ/At Ο ΔΙC/Δt--(2/3 ) ΔΙΒ]/Δt %D Ο Δ[C/Δt = -(1/2) ΔΙΑ/Δt %3DSuppose the formation of tert-butanol proceeds by the following mechanism: step elementary reaction rate constant CBr(aq) (CH), С"(аg) + Br (ag) c* k 1 2 (CH3),C"(aq) + OH (aq) → (CH,),COH(aq) k2 3 3 Suppose also k, «k,. That is, the first step is much slower than the second. Write the balanced chemical equation for the overall chemical reaction: Write the experimentally- observable rate law for the overall chemical reaction. rate = k U Note: your answer should not contain the concentrations of any intermediates. Express the rate constant k for the overall chemical reaction in terms of k1, k2, and (if necessary) the rate constants k.1 and k-2 for 0 k = the reverse of the two elementary reactions in the mechanism.
- The reaction of ethyl acetate with sodium hydroxide, CH3 COOC,H; (aq) + NaOH(aq) = CH3COONA(aq) + C2H; OH(aq) is first order in CH3 COOC,H; and first order in NaOH. If the concentration of CH3 COOC2H; was increased by half and the concentration of NaOH was increased by four, by what factor would the reaction rate increase? Express your answer numerically.In a study of the conversion of methyl isonitrile to acetonitrile in the gas phase at 250 °CCH3NC(g)CH3CN(g)the concentration of CH3NC was followed as a function of time.It was found that a graph of ln[CH3NC] versus time in seconds gave a straight line with a slope of -4.38×10-3 s-1 and a y-intercept of -2.83 . Based on this plot, the reaction is ______ order in CH3NC and the half life for the reaction is _______ seconds.The following data were obtained from A + B = P + Q by Ni brawlt stof Expt. Initial Concentration Initial ron rate ² | le M/S tipit M162 [A] [B]] CROMB 0.1944 0,389 10145 0.25 0.00720 20.45 0.50 10.0144 31.35 0.25 4 1.35 0.50 a) write the rate law. b) what is the value c) What is the overall ran order? 9 H tocal of the rate constant.